3 results about "Land quality" patented technology

This application discloses a field storage device for soil samples in a land quality geochemical survey, relating to the field of geological research technology. The device includes a main chamber, at least one independent sample compartment unit, a temperature control buffer module, and an intelligent identification management system. This application stores soil samples through the independent sample compartment unit, stabilizes and monitors the temperature inside the main chamber through the temperature control buffer module, and records and stores the sampling information of the soil samples through the intelligent identification management system. This enables physical isolation, environmental buffering, information binding, and convenient operation of soil samples, maximizing the originality and traceability of samples from the field to the laboratory.

This invention relates to a system and method for evaluating the quality grade of naturally selenium-rich land. The system includes: a data acquisition and analysis module for acquiring multi-source data of the area to be evaluated; a selenium-rich land discrimination module for determining whether land is naturally selenium-rich based on total selenium content and soil pH value; a comprehensive evaluation index module for constructing a comprehensive evaluation index system; a weight determination module for calculating the weight of each evaluation index in the comprehensive evaluation index system; a quality grade calculation module for calculating the membership degree of evaluation indicators at each index layer in the comprehensive evaluation index module; a grade division module for calculating the comprehensive quality index of each evaluation unit using an additive method; and a visualization module for integrating the evaluation thematic map with the geographic base map to obtain a quality grade evaluation map. This invention enables quantitative model calculation and spatial visualization representation of the quality grade of naturally selenium-rich land.

The application discloses a method for predicting the carbon sink promotion effect of natural forest tending, and belongs to the technical field of forest carbon sink prediction. The application is used for solving the problem of scientifically evaluating the future carbon sink of natural forest tending. The application comprises the following steps: setting a target sampling sample plot, conducting field basic information investigation, establishing forest carbon pools including arbor biomass carbon pool, litter carbon pool, dead wood carbon pool and soil organic carbon pool, calculating the initial carbon storage of the forest carbon pool as the basic data of the natural forest, based on the growth law of the forest and the carbon cycle mechanism of the ecological system, simulating the dynamic change of the carbon storage of the forest stand by using an ecological process model, predicting the carbon storage change of the four forest carbon pools of the natural forest after tending, and based on the obtained carbon storage change of the four forest carbon pools of the natural forest after tending, estimating the carbon sink generated in the forest growth process of the natural forest after tending and the forest land quality index. The application realizes the synergistic promotion of the ecological function and the carbon sink function of the forest.